ComboBox with Read Only Behavior

using System.Drawing;
using System.Windows.Forms;
using ProjectMentor.Windows.Controls;

namespace TestReadOnlyComboBox
{
	/// <summary>
	/// Summary description for DifferentCombos.
	/// </summary>
	public class DifferentCombos : System.Windows.Forms.Form
	{
    private ReadOnlyComboBox _combo1;
    private ReadOnlyComboBox _combo2;
    private ReadOnlyComboBox _combo3;
    private Label _label1;
    private Label _label2;
    private Label _label3;

    /// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public DifferentCombos()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

      _label1 = new Label();
      _label1.Text = "ComboBox:";
      _label1.Location = new Point(10, 20);
      this.Controls.Add(_label1);

      _label2 = new Label();
      _label2.Text = "ComboBox disabled:";
      _label2.Width = 110;
      _label2.Location = new Point(10, 50);
      this.Controls.Add(_label2);
      
      _label3 = new Label();
      _label3.Text = "ComboBox readonly:";
      _label3.Width = 110;
      _label3.Location = new Point(10, 80);
      this.Controls.Add(_label3);

      _combo1 = new ReadOnlyComboBox();
      _combo1.Location = new Point(140, 20);
      _combo1.Size = new Size(100, 21);
      _combo1.TabIndex = 1;
      _combo1.Items.AddRange(new object[] { "ComboBox", "blue", "green", "yellow" });
      this.Controls.Add(_combo1);

      _combo2 = new ReadOnlyComboBox();
      _combo2.Location = new Point(140, 50);
      _combo2.Size = new Size(100, 21);
      _combo2.TabIndex = 1;
      _combo2.Enabled = false;
      _combo2.Items.AddRange(new object[] { "Enabled = false", "blue", "green", "yellow" });
      this.Controls.Add(_combo2);
      _combo2.SelectedIndex = 0;

      _combo3 = new ReadOnlyComboBox();
      this.Controls.Add(_combo3);
      _combo3.Location = new Point(140, 80);
      _combo3.Size = new Size(100, 21);
      _combo3.TabIndex = 1;
      _combo3.ReadOnly = true;
      _combo3.Items.AddRange(new object[] { "ReadOnly = true", "blue", "green", "yellow" });
      _combo3.SelectedIndex = 0;

		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
      // 
      // DifferentCombos
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(272, 115);
      this.Name = "DifferentCombos";
      this.Text = "DifferentCombos";

    }
		#endregion
	}
}